Home / 2,117.02-3,175.55-818.30

Finding the Fourth Proportional to 2,117.02, 3,175.55 and 818.30

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Solution

The fourth proportional to 2,117.02, 3,175.55 and 818.30 is: 1,227.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.02 : 3,175.55 = 818.30 : x
  2. Step 2: Convert to fraction form
    2,117.02/3,175.55 = 818.30/x
  3. Step 3: Cross multiply
    2,117.02x = 3,175.55 × 818.30
  4. Step 4: Simplify right side
    2,117.02x = 2,598,552.57
  5. Step 5: Solve for x
    x = 2,598,552.57/2,117.02
  6. Step 6: Final answer
    x = 1,227.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.